Alkylation process technology
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In the sulfate alkylation process (DuPont), there are frequent leaks in the pipelines of the alkali washing cycle – is there any way to solve this problem?
What are the pressure and temperature levels? What material are the pipes made of now?
It is necessary to first understand the process parameters and pipe material before making a judgment.
Stainless steel material 316L, temperature around 53, pressure 15 kilograms
In the areas that are subjected to alkaline cleaning, due to their complex flow patterns, water segregation occurs during the neutralization process, resulting in severe corrosion. It is recommended to use Hastelloy C276, which has good corrosion resistance; however, it is expensive. Alternatively, steel-lined PTFE pipes can be used – they are less costly but have many static sealing points. Personal suggestion.
The main issue with this corrosion can be resolved by replacing it with an acid-removing coalescer or by using 304 stainless steel